I've been meaning to put up a review of this rail, got it a few weeks ago. Just getting around to doing so now and saw this thread.
I shoot a Aimpoint T1 with larue low QD mount on my VZ and am quite fond of it. I picked up this rail hoping that it'd be the perfect co-witness solution. As mentioned above, the micro will not lock down on this rail. I also have a little bit of "slop" in the fit to gas block. It could probably be remedied with shims, but reshimming in the field every time I clean it seems like a pain in the arse.
I tested the rail with my Comp 1 with arms mount, fit was good. I also mounted a scout scope to test the repeat zero and was not fully satisfied with the return. Mostly because of the fit to my rifle. A tighter fit I'm sure would solve this problem, but I just looked at the out of the box performance to MY rifle.
So the bottom line? I'll keep it because it looks good. But it won't be on my "shooter". There's just too many issues with the fit and ability to mount my T1 for me to use it. I love the look of it, I love the profile and most importantly I love that it's Made In Canada. I was asked to do a honest review and based on what I found I couldn't recommend it at this time. It's so close to perfect though and won't count it out.
What would I recommend?
- When the 2-part unit is available, allow the top to bolt to the bottom. That should should give a good repeat zero.
- Figure out what the issue is with T1's not being able to mount.
- figure out how to solve the variation in gas block thickness problem. Shims are great, as long as you aren't going to lose them.
... bottom line; I'm sorry I don't like it, I really wanted to. Like I said, it's so close to being what "I" want. I'm sure that since most shooters aren't using T1's that there won't be too many complaints. Maybe just post a notice and carry on? No one likes us cocky T1 guys anyways.
... BTW, the Brake looks great. Keep those VZ parts coming! (how about a VZ Troy-style chassis? )